Derrick-car.



8. P. MITCHELL.

DERRICK GAR.

APPLICATION FILED MAY 2. 1905.

PATENTBD APR, 17, 1906.

4 SHEETS-SHEET 1f u Will H v WITNESSES: INVENTUR 42; WM. www

PATENTED Aim. 17,1906.

s. P. MITCHELL.

DERRICK CAB.

APPLICATION FILED MAY 2, 1905.

4 SHEETS-SHEET 44 Arron/5n 7 WITNESSES UNITED STATES PAT NT omen. I

S-AMUEL'P. MITCHELL, OF PHILADELPHIA, PENNsYnVAiIIA.

' oERmok-cAR.

No. emcee Specification of Patent.

Patented April 17,1900.

kpplicatlon filed Kay 2, 1906. Serial No- 268.540.

To (tlbwhom it may concern: Be it'known that I, SAMUEL P. MfronEL a citizen of the United States, residin at Philadel hia, in the county of Philadelp 'a, State of ennsylvania, have invented certain Improvements, in Derrick-Cars, of which the following is a specification.

This invention is an improvedderrick-car,

having as its objects to handle'in the most economical manner heavier loads at longer reaches than heretofore;-to handle heavy permit the loads on either side of the car and to provide a safe means of side anchorage or counterbalancetherefor; to provide for theready' pro ulsion of the car'and the transport'ation of t e derricks load from place to place; to parts that standabove train clearance to be readily knocked down for shipment and set up by power, for operation in t e least possible tim'e;'to provide suitable storagecapa'city on the car for the entire equipment reqm'r ,and-to produce a structure attaining these ends at a reasonable cost.

. I,n heiaccompanying drawings, Figure 1 repr nts a side elevation of a derrick-car embodying the improvements. Fig.

, 2 represents? a plan view' of the same with t e main boom brokenaway. Fig. 3 represents a front elevation of the A-frame inast and a section of the car with lateral booms attached thereto. Fig. 4 represents a front elevation ofthe A-frame mast and a section bwckstay for holding it.

- Ieetiona view taken on the lines 9 9 of Figs.

7nd 8. Fi 10 is a dia ammatic'view of the'cable an sheaves for an'dling the movable backsta Fig. 11 is a side elevation of the car anthe pro elling mechanism, and F 12 is a sectional an vlew of the. same.-

11 the apparatus the car-body 1 comprises the sills 1, carried by the trucks 2. Vertical .channels 3 and inclined channels 4, arranged in pairs, are fixed at their lower ends to the car-bodyandare fixed together at their upper ends by gusset-plates 5 to form fixed stays. The flanges of the respective pairs of inclined channels are disposed to-v ward each other to form guideways, and the several parts of the ways are braced-by the bent angles 6, secured to-the onter'channels,

e races 7, supported by the members and th 8, .secured to the inner channels and carried by the bent angles.

The bolster 9 has the bearings 16 thereon,

to which the feetof the A-frame mastll are fulcrumed by fixed to the top of t e mast, has the movable ins 12. r A hearing 13,,

backstays 14 fulcrumedfthereto by a pin. 15, these stays being connected to ether by;

the bracing 16. The lower end 0 each of the stays 14 has a spindle 17 passed therethrough, which carries roller-s18, nmning in the ways formed by the inclined channels. A cable or line 19 is connected to a becket 20 fixed to one ,of the: fixed backsta an passes under an idler-sheave 21 an over a main sheave 22, journaled in the lower end of one of the movable stays, thence over the sheaves 2 2, journaled at the top of one of the fixed stays, thence over an idler-sheave 21 and main sheave 22, journaled in the -lower end of the second n'aovable'stay, thence over the sheave 23, journaled at the top of i the second fixed stay, and thence to the engine, by which the mast may be lowered and elevated. In the usual operation the mast is held in the vertical position by passing a pin 24 through the head of the fixed stage and the foot ofthe movable stays; but t e mast may be held at various elevations by.

pinning through holes'25 at various points along the inclined ways, and'it is supported in its lowered position by brackets 26on the head of the fixed stays.

The main boom 27 has its foot fulcrumed on the trunnions 28 of a trunnion-block 29;

the latter being fulcrumed on the bolster by in crumed thereon by a in 32 and connected to -a sheave-block 33. bail 34 is fulcrumed by-a pin 35 to a'trunnion-blo'ck 36, which is fulcrumed on the top of the mast b a'pin'37. A sheav block 38, supported by th pin 30. The top of the boom has a bail 31, I

IOC

e bail 34,

is connect-ed to the sheave-block 33 by a line 39, which passes through the sheave-block 40 on the mast to the en e, by which the main boom is raised an ing-block 41, carried b a line 42, passing over a sheave 43 on t e .outer end of the boom and thence through the sheave-block 40 to the engine.

When the boom is lowered and supported lowered, the liftat its outer end, it is readily disconnected irom the bolster by drawingthepin" 30Fand stowed in the boom-chamber 3 9",'and when a,

the mast is lowered the sheave-blocks lie 11 an the mast and the movable stays extend 48. The mast has the brackets 49, connect quired by t the load handle v .v

To give stabilitytothe st'ruc turei'n-t'he pj (d to-the head thereon by pins 50, the b as having the eyes51. connected therewith for the attachment of the topping-falls 52, which are connectedatoeyes 53, carried by. the tops of the lateral'booms thelines extending to the engine by which these booms. are raised and lowered. The-lifting-falls 54, supported by the eyes 155i, .attachedthe outer ends of the lateral'booms', have their lines connected 'withthe eugine -by which a" load can be handledon either si' eiof them. it will be understood that'each lateral .boo'm may be usediotprovidea'counterbalance for by theother. "I"

eration of-the booms, outriggersare provided consisting of the lsteralbraces' fi 'lconnectedi by'p'ms 57 tolthebe' "44,addth inclined braces y pms' '-.1 t t h braces .56 may; the pins" with thetop of the mast the'iends 'o the: Outriggers? blocked up and anchored toresist all ten, cncy to tip ing'the structure when this is reworkinhand. The engine, havingthe usual drums 59 and 60 and spools .61, 62, 63, and 64 for holding" 'the lines connected vith the booms, is rovided with the drum 65 for handling the, ine which operates the movablestays; The

shaft 60, which carries the drum 60, isrevolved in the'usual manner by the gear '66 and has a car 67, fixed thereto winch en-. gages an i ler-gear 68. he idler-gear en-' gages a gear 69, loose on the shaft 70, journa ed in the car-body, on which the drum 65 is loosely mounted. This drum is adapted to be shifted by conventional mechanism longitudinally on the shaftinto en agement with the fixed clutch '71 .for holdmg it against idling revolution and into engagement with the clutch 72, fixed to the-shaft 70, for revolving it therewith. The shaft is revolved b fixing the gear-wheel 69 thereto by means 0 a clutch-disk 73, splined tothe shaft, so as to beheld against rotation and movable by any usual mechanism into engagement with the clutch-ring 74 on the gear.

The car is propelled from the shaft in opposite directions by bevel-gears 75, nor

:1 mally loose thereon and ada ited to b fixed thereto inalternation. by a c utch 76. This clutch is splmed on the shaft, so as'to be heldl against revolution thereon and movable Ion-'- 92,. connected;: to the erase;

glitudimuyi as y lever 76", into clutchin engagement With h r bevel=gear, the clam being disengaged from each of said gears when disposed centrally between them. The

gears engage a,.bevel-gear 77. fixed on a having a bevel-gear 79 thereon, which engages a bevel-gear 80, fixed on the shaft 81, and drives a chain 83, ;-fixed to a car-axle 85.

The engine is disposed in a cab,havi ng'its rolof supported in front by posts 86, set inbe- "tween the drums and spools; so that the lines passing over asprocket 8'4, i

to the drums pass between the posts and the .lines 'to the spoolspass outside. The front of 80 the cab is provided with'doors 87, connected by hinges 88'to' the to of the cab, so that the front can be closed y dropping the doors and opened .by elevating or removing them.

The sides, are closed bvdoors 89, connected by hinges90 to the top ofgth'e cab; and doors ihg'the 'd'oors "89 andv dropping the doors 92 the latter being supporte ottoms by hinges 91, j V the sides being opened by elevating or remov I in the horizontal 9o osition by struts 93' to provide an extended. hoo'r for the engineer.-' There is thus pro-. ,vided an engine wholl within the cab and capable of being readi y inclo d while the s cial construction provides room and free om of movernent operatingl the engine. The cab thus'cdhstructed wit the boom- I Entire equipment. Having describedmyinventiori I claim 1.'In a c 'leriick-eai:,:a fulcrunied mastheamovable stay fulcrumed to said mast, and a fixed stay providing ansinclined-;way with which said movable stay is connected, saidparts being constructedto permit said mast s m -m the tool-boxes 94 provid means for storing the i to be lowered a'ndsupported byysaid fixed stay independently of said movable stay.

2. In a derrick-car, a fulcrumed gnast, a

Qfulcrumed boom connected to said mast, a movable. stay fulcrumed to said mast, a fixed stay providing an inclined way, and mechanism connecting said movable staywith said inclined way.

3. Ina derrickoar, a car-body, an A-' frame mast fulcrumed on said car-body, a

boom fulcrumed on said car-body and .con-

nected-to said mast, fixed stays having inclined'members carried by said car-body, and

movable stays fulerumed to'said mast and supported by saidfixed stays.

4. In a derrick -'car, a car-body, a mast having a plurality of upright members ful' crumed on saidcar-body, a boom fulcrumed on said car-body and connected to said mast, 7

a movable'stay-connected to said mast, and

a fined'stay havingan inclined member carried by said car-body and engaging said movable stay, said fixed stay having means for engaging and holding said mast.

5. In a derrick-car, a car-body, a mast 13o 7 shaft 78, journale'din the carbod this shaft Outriggers comprising an incline denses 1 Q crumed on-said body,'block-and-tackle mechanism connecting said mast and'boom, a lateral boom fulcrumed on said body, a bracket secured to said mast, block-and-tackl e mech anism for connecting said lateral boom and bracket, a motor on said car'for operating the block-and-tackle Jnechanism of said booms, and an outrigger for balancing said mechanism.

' l 7. In a derrick-car, a car-body, a mast fulcrumed on-said body, a main boom fulcrumecl on said body, lateral booms fulcrumed on said body, and Outriggers, said brace directly connected to'the top of said mast,'and

a laterall extending brace connected to said inclined race and body.

8. In a derrick-car, a car-body, an A- frame mast fulcrumed on said body, a movable stay fulcrumed to said mast and having a roller thereon, a fixed stay having members complil'ising channels forming an inclined way 1n w 'ch said roller moves, means for engaging said movable stay and holding said mast at various elevations, a motor, a line 0 erated by said motor, and sheaves carrie by said movable and fixed stays for engaging said line and handling said movable stay and mast. 9.- In a derrick-car, a car-body, a mast sup- I 'ported by said body, a main boom supported by said ba a block-and-tackle mechanism connecting said mast and boom, lateral booms sup orted by said body, block-andtackle mec anisms connecting said mast and lateral booms, an engine having a central drum for operating the main boom-tackle mechanism and lateral spools for operating the lateral boom-tackle mechanism, and a cab for inclosing said engine, said cab having posts set between said drum and s ools.

' 10." In a derrick-car, a car-b0 y'havmg longitudinallyextending tool-chambers on .either side thereof, a boom-chamber be-' tween said tool-chambers, an eng1ne, -and a cab for inclosing said engine, said cab having fpllding doors providing footways on the sides t ereof, Y Y

11. In a derrick-car, a ear -body havinglongitudinallyextending tool chambers on the sides thereof, a boom-chamber between said-tool-cha'mbers, an en e havin central drums and lateral spoog and a ca containing said en e, said cab having roofsupporting posts isposed in the lanes between said drums and spools and si e doors adapted for use as-footways. v

12. In a derrick-car, a car-bod a mast having a fulcrnmed connection wit 'said car- "body, a mainboomhaving a fulcrumed connection'with said car-body and connected to said mast, a lateral boom having a fulcrumed connection with said car-body and connected to said mast, a movable stay connected to. said mast, and an inclined stationary stay connected to said car-body, said movable stay being connected to and supported by said stationary stay.

In testimony. whereof I have hereunto set my hand, this24th day of April, 1905, in the presence of the subscribing witnesses.

' SAMUEL P. MITCHELL.

W'itnesses:

UTLEY E. CRANE, Jr., LOUIS H. BUEK. 

